Add gibbing

Engine/src/live/AnimalEntity.ts

@@ -3,6 +3,7 @@ import { AnimalDefinition, CreatureDefinition } from '../data/animals'
 import { playSong, playSound } from '../shared/audio'
 import { Action, adjustAction } from "./Action"
 import { Entity, Sensor } from "./Entity"
+import { GibletEntity } from './GibletEntity'
 import { PuddleEntity } from './PuddleEntity'
 import { WorldContext } from './World'
 
@@ -22,6 +23,8 @@ export class AnimalEntity extends Entity {
   stepSoundElapsed: number = 0
   lastYellElapsed: number = 0
   nextYell: number = 1000
+  dead: boolean = false
+  shouldGib: boolean = false
 
   constructor(def: AnimalDefinition) {
     super(`${def.name}.animal.stand.west.0`)
@@ -44,6 +47,16 @@ export class AnimalEntity extends Entity {
   }
   update(delta: number, ctx: WorldContext) {
     super.update(delta)
+
+    if (this.dead) {
+      if (this.shouldGib) {
+        this.gib(ctx)
+        this.shouldGib = false
+      }
+      this.shouldRemove = true
+      return
+    }
+
     this.lastYellElapsed += delta
 
     let waterZones = this.zones.filter(v=>v.type==='fluid')
@@ -262,6 +275,31 @@ export class AnimalEntity extends Entity {
       }
     }
   }
+  gib(ctx: WorldContext) {
+    let p = this.position
+    p[0] += this.sprite.container.width/2
+    p[1] += this.sprite.container.height/2
+    this.dead = true
+    let force = -1 + Math.random() * 2
+    let dir = Math.random() * 320
+    // 50% head gib
+    if (Math.random() > 0.5) {
+      ctx.addEntity(new GibletEntity(`giblets.${this.sprite.spriteKey}.head.default.0`, dir+Math.random()*40, force+Math.random()*10), 'objects', p[0], p[1])
+    }
+    // 44% leg gib per leg
+    for (let i = 0; i < 4; i++) {
+      if (Math.random() > 0.66) {
+        ctx.addEntity(new GibletEntity(`giblets.${this.sprite.spriteKey}.leg.default.0`, dir+Math.random()*40, force+Math.random()*10), 'objects', p[0], p[1])
+      }
+    }
+    // 35% extra gibs per 8
+    for (let i = 0; i < 8; i++) {
+      if (Math.random() > 0.65) {
+        ctx.addEntity(new GibletEntity(`giblets.any.chunk${Math.floor(1+Math.random()*4)}.default.0`, dir+Math.random()*40, force+Math.random()*10), 'objects', p[0], p[1])
+      }
+    }
+    playSound(`action/splat-v${1+Math.floor(Math.random()*7)}`, 0.5)
+  }
 }
 
 export function isAnimalEntity(o: any): o is AnimalEntity {

Engine/src/live/Entity.ts

@@ -24,6 +24,7 @@ export class Entity {
   turnRate: number = 10
   zones: Zone[] = []
   contacts: Entity[] = []
+  shouldRemove: boolean = false
 
   constructor(ctor: string) {
     this.sprite = new SpriteInstance(ctor)

Engine/src/live/GibletEntity.ts

@@ -0,0 +1,32 @@
+import * as planck from 'planck'
+import { Entity } from "./Entity"
+import { WorldContext } from "./World"
+
+export class GibletEntity extends Entity {
+  lifetime: number = 10000
+  elapsed: number = 0
+  constructor(ctor: string, dir: number, force: number) {
+    super(ctor)
+    console.log('dir', dir, 'force', force)
+    let r = dir * (Math.PI/180)
+    this.velocity[0] = Math.cos(r) * force
+    this.velocity[1] = Math.sin(r) * force
+    console.log('velocity', this.velocity)
+  }
+  update(delta: number, ctx?: WorldContext) {
+    super.update(delta)
+    this.elapsed += delta
+
+    this.velocity[0] *= 0.85
+    this.velocity[1] *= 0.85
+
+    // Eh... let's manually handle velocity
+    this.x += this.velocity[0]
+    this.y += this.velocity[1]
+
+    if (this.elapsed >= this.lifetime) {
+      ctx?.removeEntity(this)
+    }
+  }
+
+}

Engine/src/states/Game.ts

@@ -14,6 +14,7 @@ import { AnimalEntity, isAnimalEntity } from "../live/AnimalEntity"
 import { Action, adjustAction } from "../live/Action"
 import { WorldContext } from "../live/World"
 import { animals } from "../data/animals"
+import { GibletEntity } from "../live/GibletEntity"
 
 export interface PIXIMissingColorMatrix extends PIXI.Filter {
   night(intensity: number, multiply: boolean): void
@@ -46,7 +47,15 @@ export function GameState(ctx: ContextI, selectedAnimal: string, selectedSegment
   })
   let worldBody: planck.Body = world.createBody({
     type: 'static',
+    linearDamping: 1,
   })
+  worldBody.setPosition(planck.Vec2(0, 0))
+  let worldFixture = worldBody.createFixture({
+    shape: planck.Box(1, 1),
+    friction: 10,
+    density: 100,
+  })
+
   world.on('begin-contact', (contact: planck.Contact) => {
     let a = contact.getFixtureA().getUserData()
     let b = contact.getFixtureB().getUserData()
@@ -199,7 +208,14 @@ export function GameState(ctx: ContextI, selectedAnimal: string, selectedSegment
         let x = bounds[0] + Math.floor(Math.random() * bounds[2])
         let y = bounds[1] + Math.floor(Math.random() * bounds[3])
 
-        addEntity(new AnimalEntity(animals[animal]), 'objects', x, y)
+        let entity = new AnimalEntity(animals[animal])
+
+        setTimeout(() => {
+          entity.dead = true
+          entity.shouldGib = true
+        }, 1000+Math.random()*3000)
+
+        addEntity(entity, 'objects', x, y)
       }
     }
     ctx.app.stage.addChild(rootContainer)
@@ -231,9 +247,9 @@ export function GameState(ctx: ContextI, selectedAnimal: string, selectedSegment
       nightfall(true)
     }
     // Run world sim.
-    while (elapsed >= 1/2) {
-      world.step(1/2)
-      elapsed -= 1/2
+    while (elapsed >= 1/6) {
+      world.step(1/6)
+      elapsed -= 1/6
     }
     // Update/render.
     /*for (let layer of layers) {
@@ -260,6 +276,15 @@ export function GameState(ctx: ContextI, selectedAnimal: string, selectedSegment
       entity.sprite.container.y = entity.y
       entity.sprite.container.zIndex = entity.y + (entity.sprite.frame?entity.sprite.frame.originY??0:0)
     }
+    // I guess this is okay.
+    for (let entity of entities) {
+      if (entity.shouldRemove) {
+        if (entity instanceof AnimalEntity) {
+          removeEntity(entity)
+        }
+      }
+    }
+    //entities = entities.filter(v=>v.shouldRemove)
   }
 
   let addEntity = (entity: Entity, layerTitle: string, x: number, y: number) => {